[INFO] cloning repository https://github.com/Janko-dev/neural_network [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Janko-dev/neural_network" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJanko-dev%2Fneural_network", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJanko-dev%2Fneural_network'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e71d7fbf0640819119b0c70d0f170b9bd2ce4c78 [INFO] checking Janko-dev/neural_network against try#f27166d4c64dc29edc5ea3214357f191edf8b635 for pr-148329 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJanko-dev%2Fneural_network" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Janko-dev/neural_network [INFO] finished tweaking git repo https://github.com/Janko-dev/neural_network [INFO] tweaked toml for git repo https://github.com/Janko-dev/neural_network written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Janko-dev/neural_network on toolchain f27166d4c64dc29edc5ea3214357f191edf8b635 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f27166d4c64dc29edc5ea3214357f191edf8b635" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Janko-dev/neural_network already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f27166d4c64dc29edc5ea3214357f191edf8b635" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking Janko-dev/neural_network against try#f27166d4c64dc29edc5ea3214357f191edf8b635 for pr-148329 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJanko-dev%2Fneural_network" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Janko-dev/neural_network [INFO] finished tweaking git repo https://github.com/Janko-dev/neural_network [INFO] tweaked toml for git repo https://github.com/Janko-dev/neural_network written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Janko-dev/neural_network on toolchain f27166d4c64dc29edc5ea3214357f191edf8b635 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f27166d4c64dc29edc5ea3214357f191edf8b635" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Janko-dev/neural_network already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f27166d4c64dc29edc5ea3214357f191edf8b635" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded plotlib v0.5.1 [INFO] [stderr] Downloaded svg v0.7.2 [INFO] [stderr] Downloaded serde_derive v1.0.186 [INFO] [stderr] Downloaded serde v1.0.186 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f27166d4c64dc29edc5ea3214357f191edf8b635" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ecb66c7d6df10c38821de732fdfb265583998e820623c3cdbdb5f69b98751e64 [INFO] running `Command { std: "docker" "start" "-a" "ecb66c7d6df10c38821de732fdfb265583998e820623c3cdbdb5f69b98751e64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ecb66c7d6df10c38821de732fdfb265583998e820623c3cdbdb5f69b98751e64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ecb66c7d6df10c38821de732fdfb265583998e820623c3cdbdb5f69b98751e64", kill_on_drop: false }` [INFO] [stdout] ecb66c7d6df10c38821de732fdfb265583998e820623c3cdbdb5f69b98751e64 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f27166d4c64dc29edc5ea3214357f191edf8b635" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4301b85ccb40732f58734d9113d07d219a6ae175e6bd763f3a43c7fa0834d862 [INFO] running `Command { std: "docker" "start" "-a" "4301b85ccb40732f58734d9113d07d219a6ae175e6bd763f3a43c7fa0834d862", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking gimli v0.28.0 [INFO] [stderr] Compiling serde v1.0.186 [INFO] [stderr] Checking svg v0.7.2 [INFO] [stderr] Checking object v0.32.0 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Compiling cc v1.0.83 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Compiling backtrace v0.3.69 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking csv v1.2.2 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking plotlib v0.5.1 [INFO] [stderr] Checking neural_network v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `IndexMut` and `Index` [INFO] [stdout] --> src/dataframe.rs:1:31 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{error::Error, ops::{IndexMut, Index}}; [INFO] [stdout] | ^^^^^^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `IndexMut` and `Index` [INFO] [stdout] --> src/dataframe.rs:1:31 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{error::Error, ops::{IndexMut, Index}}; [INFO] [stdout] | ^^^^^^^^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mat` [INFO] [stdout] --> src/autodiff.rs:235:37 [INFO] [stdout] | [INFO] [stdout] 235 | Operator::Unary(mat, UnaryOpType::Sum) => { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_mat` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mat` [INFO] [stdout] --> src/autodiff.rs:235:37 [INFO] [stdout] | [INFO] [stdout] 235 | Operator::Unary(mat, UnaryOpType::Sum) => { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_mat` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `encoding` [INFO] [stdout] --> src/dataframe.rs:61:30 [INFO] [stdout] | [INFO] [stdout] 61 | pub fn encode(&mut self, encoding: EncodingScheme) { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_encoding` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `encoding` [INFO] [stdout] --> src/dataframe.rs:61:30 [INFO] [stdout] | [INFO] [stdout] 61 | pub fn encode(&mut self, encoding: EncodingScheme) { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_encoding` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `headers`, `data`, and `shape` are never read [INFO] [stdout] --> src/dataframe.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct DataFrame { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 12 | headers: Vec, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 13 | data: Vec, [INFO] [stdout] | ^^^^ [INFO] [stdout] 14 | shape: (usize, usize) [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `DataFrame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Matrix` [INFO] [stdout] --> src/main.rs:3:26 [INFO] [stdout] | [INFO] [stdout] 3 | use neural_network::{NN, Matrix}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 11 | return Ok(()); [INFO] [stdout] | ------------- any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 40 | / let x_train = vec![ [INFO] [stdout] 41 | | vec![0., 0.], [INFO] [stdout] 42 | | vec![0., 1.], [INFO] [stdout] 43 | | vec![1., 0.], [INFO] [stdout] 44 | | vec![1., 1.], [INFO] [stdout] 45 | | ]; [INFO] [stdout] | |______^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Matrix` [INFO] [stdout] --> src/main.rs:3:26 [INFO] [stdout] | [INFO] [stdout] 3 | use neural_network::{NN, Matrix}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 11 | return Ok(()); [INFO] [stdout] | ------------- any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 40 | / let x_train = vec![ [INFO] [stdout] 41 | | vec![0., 0.], [INFO] [stdout] 42 | | vec![0., 1.], [INFO] [stdout] 43 | | vec![1., 0.], [INFO] [stdout] 44 | | vec![1., 1.], [INFO] [stdout] 45 | | ]; [INFO] [stdout] | |______^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x_train` [INFO] [stdout] --> src/main.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let x_train = vec![ [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_train` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y_train` [INFO] [stdout] --> src/main.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let y_train = vec![0., 1., 1., 0.]; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_train` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nn` [INFO] [stdout] --> src/main.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | let mut nn = NN::new(vec![2, 4, 1], 4.5); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `losses` [INFO] [stdout] --> src/main.rs:60:9 [INFO] [stdout] | [INFO] [stdout] 60 | let losses = nn.train(&x_train, &y_train, BATCH_SIZE, EPOCHS)?; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_losses` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:60:18 [INFO] [stdout] | [INFO] [stdout] 60 | let losses = nn.train(&x_train, &y_train, BATCH_SIZE, EPOCHS)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `p` [INFO] [stdout] --> src/main.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let p = Plot::new( [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_p` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/main.rs:73:9 [INFO] [stdout] | [INFO] [stdout] 73 | let v = ContinuousView::new() [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:80:5 [INFO] [stdout] | [INFO] [stdout] 80 | nn.forward((&x_train[0]).into())?.print(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:81:5 [INFO] [stdout] | [INFO] [stdout] 81 | nn.forward((&x_train[1]).into())?.print(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:82:5 [INFO] [stdout] | [INFO] [stdout] 82 | nn.forward((&x_train[2]).into())?.print(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:83:5 [INFO] [stdout] | [INFO] [stdout] 83 | nn.forward((&x_train[3]).into())?.print(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x_train` [INFO] [stdout] --> src/main.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let x_train = vec![ [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_train` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y_train` [INFO] [stdout] --> src/main.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let y_train = vec![0., 1., 1., 0.]; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_train` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nn` [INFO] [stdout] --> src/main.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | let mut nn = NN::new(vec![2, 4, 1], 4.5); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nn` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `losses` [INFO] [stdout] --> src/main.rs:60:9 [INFO] [stdout] | [INFO] [stdout] 60 | let losses = nn.train(&x_train, &y_train, BATCH_SIZE, EPOCHS)?; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_losses` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:60:18 [INFO] [stdout] | [INFO] [stdout] 60 | let losses = nn.train(&x_train, &y_train, BATCH_SIZE, EPOCHS)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `p` [INFO] [stdout] --> src/main.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let p = Plot::new( [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_p` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/main.rs:73:9 [INFO] [stdout] | [INFO] [stdout] 73 | let v = ContinuousView::new() [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:80:5 [INFO] [stdout] | [INFO] [stdout] 80 | nn.forward((&x_train[0]).into())?.print(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:81:5 [INFO] [stdout] | [INFO] [stdout] 81 | nn.forward((&x_train[1]).into())?.print(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:82:5 [INFO] [stdout] | [INFO] [stdout] 82 | nn.forward((&x_train[2]).into())?.print(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/main.rs:83:5 [INFO] [stdout] | [INFO] [stdout] 83 | nn.forward((&x_train[3]).into())?.print(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.03s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: svg v0.7.2 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4` [INFO] running `Command { std: "docker" "inspect" "4301b85ccb40732f58734d9113d07d219a6ae175e6bd763f3a43c7fa0834d862", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4301b85ccb40732f58734d9113d07d219a6ae175e6bd763f3a43c7fa0834d862", kill_on_drop: false }` [INFO] [stdout] 4301b85ccb40732f58734d9113d07d219a6ae175e6bd763f3a43c7fa0834d862